JC/T 621-2021 Quicklime for silicate building products
1 Scope
This document specifies the terms and definitions, classification, grades and marking, technical requirements, test methods, inspection rules, as well as quality certificates, transportation, and storage of quicklime for silicate building products.
This document applies to quicklime for silicate building products such as autoclaved aerated concrete slabs, autoclaved aerated concrete blocks, autoclaved fly ash bricks, autoclaved fly ash hollow bricks and hollow blocks, autoclaved sand-lime bricks and blocks, and calcium silicate boards.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 5762 Methods for chemical analysis of limestone, quicklime and hydrated lime for building materials industry
GB/T 18968 Terms of wall materials
JC/T 478.1-2013 Standard test methods for building lime - Part 1: Methods for phisical testing
JC/T 619 Terminology for lime
JC/T 620 Sampling method for lime
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in JC/T 619, GB/T 18968 and the following apply.
3.1
silicate building products
building products made primarily from siliceous and calcareous materials using hydrothermal synthesis technology
4 Classification , grades and designation
4.1 Classification
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification , grades and designation
5 Technical requirements
6 Test methods
7 Inspection rules
8 Quality certificate, transportation and storage
Annex A (Normative) Method for testing slaking speed and temperature of quicklime
JC/T 621-2021 Quicklime for silicate building products
1 Scope
This document specifies the terms and definitions, classification, grades and marking, technical requirements, test methods, inspection rules, as well as quality certificates, transportation, and storage of quicklime for silicate building products.
This document applies to quicklime for silicate building products such as autoclaved aerated concrete slabs, autoclaved aerated concrete blocks, autoclaved fly ash bricks, autoclaved fly ash hollow bricks and hollow blocks, autoclaved sand-lime bricks and blocks, and calcium silicate boards.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 5762 Methods for chemical analysis of limestone, quicklime and hydrated lime for building materials industry
GB/T 18968 Terms of wall materials
JC/T 478.1-2013 Standard test methods for building lime - Part 1: Methods for phisical testing
JC/T 619 Terminology for lime
JC/T 620 Sampling method for lime
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in JC/T 619, GB/T 18968 and the following apply.
3.1
silicate building products
building products made primarily from siliceous and calcareous materials using hydrothermal synthesis technology
4 Classification , grades and designation
4.1 Classification
Contents of JC/T 621-2021
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification , grades and designation
5 Technical requirements
6 Test methods
7 Inspection rules
8 Quality certificate, transportation and storage
Annex A (Normative) Method for testing slaking speed and temperature of quicklime
